Rotary valve



Nov. 18, 1930. J: M. RAUHA. JR, ET AL ROTARY VALVE Filed Dec. 24, 192 7 5 Sheets-Sheet 1 v j7Ue/77 O/f 1930- .1. M. RAUHA, .-.IR., E AL 1,782,389

ROTARY VALVE Filed Dec, 24, 1927 I5 Sheet-Sheeb 2 177 UGU/ O/f Patented Nov. 18, 1930 flJOLI IN "RAUi- IA; iTB tfAND Amixiiiii m'fson, OF IOWEN, Wisoofisrivj? P F-"4 W We r obj ectl is to provide: wrotafyrwalve that is" oil videwt rotary vgilvei foi' an "internal Combos 10 tionengine, thmtin clurlee it sectional casing withe sectional hearing forming the lining 'ofxseid easir'ig whereby access may be had to 1 the valve in an easy and expeditious manner. FA stilhfuirthwobj ect of the invention is to provide a srotary: valve liavingehlargecl p01 tions-ifomned therewith; with the. valve ports I i a formed iii theserilargeclportions,- anclthe easmg as wellas: the valve bea'rlng bemg formed placement of the-ports with respectto the cvlincleigj intake. 221ml exhaust IIHELIllIEOlCl pa ssages will'be eliminated. Therefore accurate e registration ofithe ports 1 ancl passages will ,q be assiired. i i i v r Another"olojectiof the iiiventioi is to pro-- vide arotary valve for internal Combustion engines that has-"an oiling syteliife iisupply ing thesafne with SllfilClBhtOll at all times.

provide a rotary valve structure of the 'eli'arac-t er set forth that is extremely simple in construction, inexpensive to nmn'ufgi ctui'e ancl ellioieiit inoperation ian d ervice.

This invention also'eonsii s certain other features of construction andin.thewcombinm' tion mid ai'raiigeineiityofthe sevoi'nl parts, to be hereinafter fully described, illustrated in the aecomp anying drawil e ah Cl specifically l 'I pointed out intheralqpendettcl xims.

ence "will bewhad tothel accompanying- "ch-aw ings whereln like characters fdenote like, or corresponding parts throughout the fSBVQIQJI views, and in which:

This invention i'elate torotziry vilvesfoiq internal combustion engines 'ancl'its :generzil with conip rtmehts to accommodate the enlargedlportions rwith theresult casual disk V I reference minim-2115.2; In :descrlhlng our; Inventioniniiietaihrefer-i i and the upper: section s arrar gedjin intake position. i

Figure' lis a similar viewwith theivalve arranged in exhaust po'sitioii." j' 1 1 Figure sectional View showing the sectional valve heiirin'gmid the OlllHQIflBaIISL Figureffi is a viewiofjthe valve p'efseeonstructed for a fourcflinklerehgine;*

Figure 7 is 1 fragmentary vie\v illustrit- 'ATENT v the engine and valve Structure with 'the valvef ing the arrangement of tlie. Cooling groovesQ "Referring tO ElJlIE drewingsi ini detail, the letter A indicates the blo'ekfof theyengine as shown,""and B the*heafdmthereot; QWhile the engine as i s lggeste dt from the construction 7 of the valve-per ee :as shown" in Figure 6, is i shown as being fo-ur cylinder fourijcy'ele type,"we wztntit understoodftlmtlthe valve The 111 eatl is 1 formed "with substantially conoan be uised for 1 any (type; of engine without I departing from the siiirit of the invention.

c'eveclcombustionchambers Czwhiohhave si'cle a-clj mm to the valve inclined toward the saineyanclthase inelinedi walls} merge ihto passages D'thatare disposedi i eoinmuniem tioiiwith the valve easing as clearly shown in Figure 2,3"a nd ofthe clrztwingsi i The vzilve casing" isfformd fromse ctione, A still furthe i objectbf the inventiohi s :to

namely 'a lower 1 seetion ,L which is* formed 1 with the block and an= upper Section Qwhioh is formed with the heatdfandthe e'asilig'is dis' pozedlaterally of the block as shown;

foi'iniilig a si hsta n ti ally fin likeconstruotioii V for; that purposeziancl fire indiCa-tcl "by the.

through the "niedi'u n o fold 7 for the exhaust passages and an intake manifold 8 for the intake passages.

The valve 9 which as best shown in Figure 6 is of course cylindrical in formation and has formed thereon enlargements 10 that are provided with arcuate shape passages 11. While we have shown four enlargements 10 in Figure 6, it will be obvious that this number is employed fo a four cylinder engine, and the nun'iber oi" enlargement-s depends upon the number of cylinders. 7

The casing is provided with chambers to zirconm'iodate the enlargements l0 and a sectional bearing for the valve is arranged in the casing in a manner to provide a lining for the latter and the bearing of course isenlarged at spaced-intervals so that the enlarged portions of the bearing will (it within the chambers of the casing. The bearing is likewise formed into sections, and includes an upper section 12 and a lower section 13. The sections 12 and 13 have their confronting edges reduced to provide tongues 14 disposed in overlapped relation as clearly shown in Figures 2, Sand 4. The bearing is provided with openings throughout its length so as to communicate with the respective passages, namely the cylinder passages, the exhaust passages and the intake passages. By forming the casing. and bearing into sections as above set forth, it will be apparent that ready access may be had to the valve by merely removingthe head B.

The flanges 3 are provided with cut-out arcs 3 forming a part of the grooves 2 as best shown in Figure'2, and the'grooves extend inwardly to the bearing and have their ends terminating adjacent the exhaust and intake passages so that the bearing will be cooled to retain the valve 9 in a cooled condition as will be apparent. i

Arranged at intervals in the upper section 2 of the valve casing is a plurality of openings whichare disposed in registration with like openings formed inthe upper section of the bearing, and disposed in these openings are nipples 15 that are threadedly secured at their inner ends in the upper section ofthe hearing as shown in Figure 5 and the outer ends of the nipples 15 are provided with reduced threaded portions to accommodate coupling sleeves 16. which are threadedly secured to adjacent ends of pipe sections 17 for securing the latter into the nipples.

The pipe sections 17 extend in arcuate formation from the nipples, and are thence bent at right angles as at' 18 upon themselves to provide straight portions 19. At the juncture of the. curved portions with the straight portions, the pipe sections" are provided with flat arms 20 that have openings formed in the outer ends thereof to be received by the boltsof the bolt and nut connections l, with the result the pipe sections will communication with be held in secure position. A manifold, not shown, is secured to the lower ends of the straight portions 19 and this manifold may be in communication with the crank case of the engine, whereby the oil pumping system will supply efiicient amount of oil to the bearing, the oil cooperating with the air to retain the valve in a cool condition which will of course assure proper operation of the valve in this respect.

The valve is provided at one of its ends wit-h a trunnion or stub shaft 21 which has secured thereto in any appropriate manner a gear 22, while secured to the block in opposed relation with respect to the valve is a stub shaft which receivesa gear 23, and fixed to a shaft 24 is a relatively large gear 25 and a relatively small gear 26. However, the small gear 26 is of the same size as the gears 22 and 23, and a similar size gear which is indicated by the reference numeral 27 is socured to the crank shaft of the engine.

The gear 27 meshes with the large gear whereby the shaft 24. is rotated for impart ing rotation to the gear 26 which has trained thereabout a sprocket chain 28 that is also trained about the gears 22 and 23 as shown in Figurel.

From the above description and disclosure of the drawings, it will be obvious that we have provided a rotary valve construction that is extremely simple and due to the grooving of the valve casing and the manner of supplying oil to the valve, the valve will be retained in a cool condition at all times. The enlargements formed on the valve per se as shown in Figure 6 and which are disposed in the compartments therefor, positively eliminate end thrust of the valve, with the result the passages that are formed in the enlargements will accurately register with the cylinder, intake and exhaust passages.

It is thought from the foregoing description that the advantages and novel features of our invention will be readily apparent.

e desire it to be understood that we may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended. claims.

' lVhat we claim is 'l. The combination with an internal combustion engine having a removable head, a valve casing including an upper section formed with the head, a lower section formed with the block of the engine, said valve casing being grooved to provide air spaces extending therethrough, a cylinder valve arranged in said casing, enlargements formed with said cylindrical valve and being provided with arcuate shape passages adapted to communicate with passages to the cylinders of the engine and passages to the exhaust and intake manifolds of the engine, and means for oiling the valve, flanges formed with the sec tions of the valve casing and having bores mg 7 l'stering with the grooves, and said grooves, bores 011mg means belng adapted to ie tions and being in communication with a v source of 011 supply, flat arms formed wlth p p g lthe pipe nipples,

tain the valve in a cool condition."

2. In an engine, a sectional casing formed with compartments, a valve mounted for rotation in said casing, a sectional bearinglining in said casing and extending into the compartments overlapplng tongues formedlwlth said hearings nipples" secured in openings formed in the casing and sectional bearing rethreaded reduced outer Sends formed With saidinipples, pipe sections for conveying oil'to the nipples and being secured spectively thereto, and flat arms formed with' said pipe seotionsand being secured to the casin v V j 8. in a rotary valve, acasing, a bearing forming a lining for said c-asing,'a valve mounted for rotation in saidcasing, nipples threadedly secured iii-openings formed in the bearing and extending through the casing, re-

ducedthreaded outer ends formed'with said plpe sections including arcuate shape i portionsliaving threaded ends, couplings securing the threaded ends of the plpe sect ons to the reduced threaded ends of the nlpples straight portions included in said pipe secsections at the juncture of the arouate portionswith the straight portions, and means for securing said arms tothe casing. Owen, Vie, July 8,1927. 5 H

a l l JOHN ;M. RAUHA, JR.

ALEX MATTSON. v 

